Pvp disc hit cap?

Hello, Ive recently leveled my priest and I was wondering about pvp hit cap, My fears, SW: D and mana burn seem to miss, which can be frustrating, Is it worth getting hit capped? and if so, what is the best way?

4% hit. if you can get spell pen do so. i run with around 175 but i'd welcome more if i could squeeze it in. i use resi + spell pen for blue gems and the spell pen cloak enchant

edit: i have the hit bracers with 50 hit on them, maybe one more piece of hit gear (can't remember and can't log on atm) and the 359 spirit staff with some of the spirit reforged to hit. just over 4% in total

You need exactly 4% hit and 200 spell penetration. Try to get these numbers exactly, anything above will be useless (well, technically not because of nightelf racial and mage armor, but you shouldn't change gear just for these two exceptions) and anything below will make you miss with spells/CC, and you never want to miss a critical CC.
You can get the whole 200 spell penetration with the PvP neck or cloak.

You need exactly 4% hit and 200 spell penetration. Try to get these numbers exactly, anything above will be useless (well, technically not because of nightelf racial and mage armor, but you shouldn't change gear just for these two exceptions) and anything below will make you miss with spells/CC, and you never want to miss a critical CC.
You can get the whole 200 spell penetration with the PvP neck or cloak.

Where are you pulling 200 from? Shadow protection gives 195, therefore you need 195 spell pen for everyone but mages with mage armor up. Go for 240 since thats what you'll need for mages, no point in not making sure you wont get a fear resisted. Plus night elves racial doesnt affect spells so 4% hit is all you need for that.

By the way all this information can be found by hovering over "Spell Hit" in your character stats, it will say your chance to miss a lvl 85 target. Spell pen is pretty self expalanitory: Lowers target's resitance by X, so you need as much spell pen as they have resistances.